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Hello, Help please again, Salaries of newly hired workers at a major company are normally distributed with a mean of $59,000 and a standard deviation
Hello,
Help please again,
Salaries of newly hired workers at a major company are normally distributed with a mean of $59,000 and a standard deviation of $7,000. However, a recent survey from a random sample of 40 newly hired workers shows a mean salary of $57,500 during the past recession. You want to determine if salary levels have decreased during the past recession. At the 1% level of significance, the value of Zcrit is:
Thank you
Joey
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